OAKTON PH CALIBRATION BUFF, 4.01, 500 ML

• All Oakton pH buffers are traceable to NIST standard reference materials
• Buffer solution lets you calibrate pH instruments to ensure accuracy
• If unopened, shelf life is 2 years
• NIST/USA buffer value of pH 4.01
• Oakton pH Buffer Solutions have pH/temperature tables printed on the labels for accurate calibrations (not on 60-mL, but included as insert)
• Manufactured under ISO 9000 quality guidelines and traceable to NIST standards
• If unopened, shelf life is 2 years; once opened, use pH 4 and pH 7 within 90 days, pH 10 within 30 days
  
  
• Buffer Options:

  - pH 1.68 buffer available in clear
  - pH 4.01 buffer available in red
  - pH 6.86 buffer available in clear
  - pH 7.00 buffer available in yellow
  - pH 9.18 buffer available in clear
  - pH 10.01 buffer available in blue
  - pH 12.46 buffer available in clear

• Standardized against NIST-traceable pH references for meters with 0.01 resolution. Sold in individual bottles; 500-mL bottles are also available in cases of 12.

• Store buffers away from direct sunlight.

Specifications & Description